Method for enhancing plant disease controlling effects of aryl phenyl ketone fungicide, and method for controlling plant diseases

Abstract

A method for remarkably enhancing plant disease controlling effects, and a method for controlling plant diseases are provided. A method for enhancing plant disease controlling effects of an aryl phenyl ketone fungicide includes using an aryl phenyl ketone fungicide as a component (a) in combination with at least one component (b) selected from the group consisting of a nonionic surfactant, an anionic surfactant, a cationic surfactant, a vegetable oil, a paraffin, a resin and a terpene.

The invention claimed is: 
     
       1. A method for treating powdery mildew, which comprises:
 applying to a plant or to soil where the plant grows an aryl phenyl ketone fungicide as a component (a) in combination with a nonionic surfactant as a component (b), 
 wherein the nonionic surfactant is a polyhydric alcohol surfactant, 
 wherein the mixing weight ratio of the component (a) to the component (b) is from 1:500 to 50:1, 
 wherein the component (a) is pyriofenone, and 
 wherein the polyhydric alcohol surfactant is selected from a blend of methylated soybean oil and sorbitan fatty acid ester; and a blend of paraffin-based petroleum, polyhydric alcohol fatty acid ester, and polyhydric alcohol polyoxyethylene oxide fatty acid ester. 
 
     
     
       2. The method according to  claim 1 , wherein the component (b) comprises a vegetable oil. 
     
     
       3. The method according to  claim 1 , wherein the component (b) comprises a paraffin. 
     
     
       4. A method for controlling powdery mildew, which comprises:
 applying an aryl phenyl ketone fungicide as a component (a) in combination with a nonionic surfactant as a component (b), to plants or to soil where they grow, 
 wherein the nonionic surfactant is at least one member selected from the group consisting of a polyhydric alcohol surfactant and an alkanolamide surfactant, 
 wherein the mixing weight ratio of the component (a) to the component (b) is from 1:500 to 50:1, 
 wherein the component (a) is pyriofenone, and 
 wherein the polyhydric alcohol surfactant is selected from a blend of methylated soybean oil and sorbitan fatty acid ester; or a blend of paraffin-based petroleum, polyhydric alcohol fatty acid ester, and polyhydric alcohol polyoxyethylene oxide fatty acid ester. 
 
     
     
       5. The method according to  claim 4 , wherein the component (b) comprises vegetable oil. 
     
     
       6. The method according to  claim 4 , wherein the component (b) comprises a paraffin. 
     
     
       7. A method for controlling plant diseases, which comprises applying an aryl phenyl ketone fungicide as a component (a) in combination with a nonionic surfactant as a component (b), to plants or to soil where they grow,
 wherein the nonionic surfactant is at least one member selected from the group consisting of a polyhydric alcohol surfactant and an alkanolamide surfactant, 
 wherein the mixing weight ratio of the component (a) to the component (b) is from 1:500 to 50:1, 
 wherein the component (a) is pyriofenone, and 
 wherein the polyhydric alcohol surfactant is selected from a blend of methylated soybean oil and sorbitan fatty acid ester; or a blend of paraffin-based petroleum, polyhydric alcohol fatty acid ester, and polyhydric alcohol polyoxyethylene oxide fatty acid ester. 
 
     
     
       8. The method according to  claim 1 , wherein the alkanolamide surfactant is a mixture of ethanolamine, triethanolamine, and polyoxyethylene alkyl aryl sulfate. 
     
     
       9. The method according to  claim 4 , wherein the alkanolamide surfactant is a mixture of ethanolamine, triethanolamine, and polyoxyethylene alkyl aryl sulfate. 
     
     
       10. The method according to  claim 7 , wherein the nonionic surfactant is the polyhydric alcohol surfactant.